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A kind of stimuli-responsive organic long afterglow material and its preparation method and application

A long afterglow material and responsive technology, applied in organic chemistry, luminescent materials, chemical instruments and methods, etc., to achieve simple synthesis, high yield and stable performance

Active Publication Date: 2022-03-25
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the development of organic ultra-long room temperature phosphorescence (OURTP) materials with excellent properties, that is, organic long-lasting materials, is facing great challenges.

Method used

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  • A kind of stimuli-responsive organic long afterglow material and its preparation method and application
  • A kind of stimuli-responsive organic long afterglow material and its preparation method and application
  • A kind of stimuli-responsive organic long afterglow material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the synthesis of organic long afterglow material MBDPAC

[0039] Weigh the medicines, 9,9-diphenylacridine (1.0g), sodium hydride (0.14g) into a 100mL double-necked round bottom flask, add a stirring magnet, and use a double-row tube to evacuate and repeatedly blow in argon Inflate 3 times, and finally inflate the balloon. Set up the device, turn on the magnetic stirrer, add 30 mL of freshly distilled tetrahydrofuran (THF) solvent with a syringe to fully dissolve the drug, and stir the reaction at room temperature for 1.5 h. Quickly drop 0.45 mL of 1-bromo-2-methylbutane reagent into the vacuum-sealed flask, raise the temperature of the reaction system to 66° C., and react for 14 hours. The reaction solution was quenched with 50 mL of water, extracted with 3×40 mL of dichloromethane solution, the organic phase was collected and dried with anhydrous sodium sulfate, concentrated to obtain a crude product, and 0.96 g of a white solid product obtained by sepa...

Embodiment 2

[0044] Embodiment 2: the synthesis of organic long afterglow material MBDMAC

[0045] Weigh the medicine, 9,9-dimethylacridine (1.0g), sodium hydride (0.23g) into a 100mL double-necked round-bottom flask, add a stirring magnet, and use a double-row tube to evacuate and repeatedly blow in argon Inflate 3 times, and finally inflate the balloon. Set up the device, turn on the magnetic stirrer, add 30 mL of freshly distilled tetrahydrofuran (THF) solvent with a syringe to fully dissolve the drug, and stir the reaction at room temperature for 1.5 h. Quickly drop 0.5 mL of bromopropane reagent into the above-mentioned vacuum-tight flask, raise the temperature of the reaction system to 66° C., and react for 14 hours. The reaction solution was quenched with 50 mL of water, extracted with 3×40 mL of dichloromethane solution, the organic phase was collected and dried with anhydrous sodium sulfate, concentrated to obtain a crude product, and 1.1 g of a white solid product obtained by se...

Embodiment 3

[0050] Embodiment 3: Fabrication of Programmable Multiple Data Encryption Device

[0051] A flexible and transparent device with stimuli-responsive properties was obtained by printing the stimuli-responsive long-lasting material MBDPAC on a transparent PET substrate by screen printing technology. Cover the hollow template with encrypted information on the stimuli-responsive flexible transparent device, and then use ultraviolet light for photoactivation, or directly write (that is, photoactivate the material) encrypted information on the stimuli-responsive flexible transparent device with an X-ray pen, A stimulus-responsive flexible transparent device with encrypted information is fabricated.

[0052] Shine light on it and remove the light to read previously entered encrypted messages. Oxygen fumigation or heating of the device can erase the input information and return to the original state, that is, the stimulus-responsive flexible transparent device. Data encryption can be...

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Abstract

The invention discloses a stimuli-responsive organic long-lasting material and its preparation method and application. The system material contains an excellent long-lasting constituent unit acridine unit, and the material is endowed with excellent stimuli-response characteristics by introducing an alkyl chain. Under the action of external stimuli, the arrangement of molecules can be effectively regulated, and the performance of organic long-lasting materials can be improved. The material has excellent stimuli-response characteristics, organic long afterglow performance, and the compound of the system is easy to prepare, low in cost and good in compound stability, and can be used to construct programmable multiple data encryption devices.

Description

technical field [0001] The invention relates to an organic photoelectric material and its preparation method and application, in particular to a stimulus-responsive organic long-lasting afterglow material and its preparation method and application. Background technique [0002] Long afterglow luminescent materials can still continue to emit light after the excitation source stops exciting. They can be used in low-light lighting, emergency instructions, building energy saving, intelligent transportation, information storage and display, etc., especially in the "excitation-free" conditions. It has broad application prospects in sensing and imaging, multiple data encryption and anti-counterfeiting. Compared with traditional inorganic materials, organic materials have the characteristics of wide source of raw materials, easy modification of molecular structure, simple preparation process, light weight, and flexibility, which well make up for the shortcomings of inorganic materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D219/02C09K11/06
CPCC07D219/02C09K11/06C09K2211/1029
Inventor 陶冶李慧陈润锋李欢欢黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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